The Radarr & Sonarr Companion app is a simple tool for managing your movie and TV library, and it can also add new items to your radarr or sonarr system. This may seem like an obvious thing to do, but if you haven't seen it yet, you probably haven't been to a library or a TV station. You probably have a ton of movies and shows in your collection, and if you want to keep track of them all, you need a way to organize them. The Radarr & Sonarr Companion app is the best way to do this, and you can also add new items to your library.